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Tax Sale Atlas

Sanders County, MT tax sales

Tax Sale Atlas maps the Sanders County, MT tax sale, one of 2,862 counties in 36 states. Montana sells tax lien certificates paying up to 10%. Sale office, calendar and list locations read from state rules plus what the county publishes on Sep 11, 2026.

How tax lien and tax deed sales work in Sanders County, seat of Thompson Falls: sale calendar, auction platform, over-the-counter lists, and the offices that run each sale.

New to tax sales? Read how Montana tax sales work or look terms up in the glossary.

Next sale
Nothing is scheduled in advance.
Format
In person
County office
406-827-6924
Every displayed fact carries a source badge. Verified Sep 11, 2026 against official county and state pages.How we verify
On this page
Look up a sale detail

County Treasurer. In person at the county treasurer's office during regular office hours. Mont. Code Ann. 15-18-220(6) permits a county to conduct the auction electronically but does not require it, and there is no statewide platform.. As applied for. There is no deed sale calendar, and most parcels never reach an auction at all.

Record quality: medium. Last verified: 2026-09-11.

Mont. Code Ann. 15-18-220 - Sale at public auction, notice of auction, cancellation of assignment for unsuccessful auction, foreign entity prohibition (source accessed 2026-09-10)

Recorded reference information. Verify current sale conditions with the county. Read the full sale details.

Link to this detail

How Sanders County sells delinquent taxes

Tax certificate sale (lien)

In person at the county treasurer's counter, or by mail or email where the county allows it. Montana holds no tax lien auction, so there is no online bidding platform, no registration portal and no vendor to sign up with.
Run by
Sanders County Treasurer's Office
Frequency
annual
Typical timing
No auction and no annual sale date.
Registration
No bidder registration and no auction account.
Sale list
Uncollected Delinquent Real Property Taxes, All Years
When it runs
No auction and no annual sale date. The Treasurer mails pending tax lien notices in July, and the county's July 13, 2026 quarterly update recorded "Mailed 536 pending tax lien notices." The tax lien attaches to the county no later than the first working day in August. An investor's own notice of pending assignment may not be mailed before August 15 and must precede payment by two weeks, so the earliest an assignment can close is roughly August 29, after which the office issues assignments on request rather than on a posted calendar.
Registration and deposit

No bidder registration and no auction account. Send the required notice of pending assignment by certified mail to the person the property was assessed to, no earlier than August 15 and at least two weeks before you pay, then present proof of that mailing to the Treasurer's office along with payment of the delinquent taxes, penalties, interest and costs. The Treasurer then issues an assignment certificate and mails a copy to the assessed owner. Call 406-827-6924 first to confirm the county's assignment fee and how the office handles two buyers seeking the same lien.

Sale format and venue
There is no auction, no bidding platform and no online portal. The Treasurer assigns the county's tax lien directly to a buyer who completes the statutory certified-mail notice and pays the delinquency in full, handled in person or by mail at the Thompson Falls courthouse office. Sanders County does publish a parcel-level delinquent list from the Treasurer page. The August 14, 2026 run shows 302 delinquent real property accounts owing $467,684.98 and gives, for each parcel, the tax ID, owner name and mailing address, legal description, geocode, tax sale certificate number, tax year, and the tax, penalty and interest due, which is enough to shortlist targets before calling the office.
Source: Sanders County Treasurer· Verified Sep 11, 2026

Tax deed sale

In person at the county treasurer's office during regular office hours. Mont. Code Ann. 15-18-220(6) permits a county to conduct the auction electronically but does not require it, and there is no statewide platform.
Run by
County Treasurer
Frequency
As applied for. There is no deed sale calendar, and most parcels never reach an auction at all.
Typical timing
Nothing is scheduled in advance.
When it runs
Nothing is scheduled in advance. Once the redemption period runs out, 3 years after attachment or 2 years for an unimproved subdivided lot with delinquent improvement district assessments, the path forks on what is standing on the parcel. Ordinary property is deeded straight to the assignee under Mont. Code Ann. 15-18-211 for a 25 dollar deed fee plus the county's notice costs, with no auction and no bidders. Property with a dwelling currently occupied by the legal titleholder of record goes to a public auction instead: the assignee files a tax deed application with the treasurer after the redemption period expires, and the treasurer must hold the auction in the county within 60 days of receiving it. The treasurer publishes the auction notice with the date, time, location, legal description, deposit requirement and minimum opening bid. The auction runs during the treasurer's regular office hours and may be conducted electronically.
Registration and deposit

Bidders at a Montana tax deed auction do not pre-register, but three requirements bind at the auction itself. An entity must give the treasurer written proof that it is a domestic entity before the treasurer will accept its opening bid, and a foreign entity may not buy at all. The high bidder posts a nonrefundable deposit at the time of sale of 5 percent of the bid or 200 dollars, whichever is greater, applied to the price on full payment, and the treasurer may ask bidders to show they can post it. Full payment of the purchase price plus the treasurer's auction costs is due within 24 hours of the sale, excluding weekends and legal holidays, and a bidder who misses it loses the parcel to the next highest bidder. Confirm the accepted payment methods with the county treasurer before the auction opens.

Sale format and venue
The opening bid is the amount needed to redeem the lien, plus everything the assignee paid on application, plus the tax deed and recording fees, plus an amount equal to half the most recent assessed value of the land and of the dwelling. An independent appraisal meeting Montana Board of Real Estate Appraisers standards and conducted within 6 months may stand in for the assessed value. The treasurer may not take a bid below that figure. The half-value component, and anything bid above the opening bid, is surplus: the treasurer repays the assignee first where someone else buys, then pays the surplus to the legal titleholder of record within 30 days. If nobody bids, or no bidder pays, or the assignee wins and fails to pay inside the 24 hours, the treasurer cancels the assignment and files a notice of cancellation, and the investor loses the lien position entirely. The owner may redeem right up to the day of the auction.
Source: Mont. Code Ann. 15-18-220 - Sale at public auction, notice of auction, cancellation of assignment for unsuccessful auction, foreign entity prohibitionMont. Code Ann. 15-18-220· Verified Sep 10, 2026

Sanders County tax sale list and auction calendar

For Sanders County tax sale 2026 searches, use the county-run sources below rather than a copied parcel list, and confirm the parcel, registration cutoff, deposit, and payment deadline against the county before you bid. If the parcels on this list are vacant land rather than houses, what buying land at a tax sale hands you is the place to start.

  1. Get the advertised list

    Use Uncollected Delinquent Real Property Taxes, All Years for the current advertised parcels, then recheck it before the auction.

  2. Register to bid

    Ask the county office how and when to register; many counties close registration days or weeks before the sale.

  3. Sale day

    Nothing is scheduled in advance. The sale is live and in person; there is no online bidding platform. Confirm the venue and hour with the county office before you go.

  4. Confirm with the office

    If the list, platform, and notice disagree, use County Treasurer as the source to confirm which parcels are actually offered.

Before you bid in Sanders County

  1. Start with the live sale list

    Pull the current advertised parcels from Uncollected Delinquent Real Property Taxes, All Years. Lists can change before the sale, so recheck the county source before you price a parcel.

  2. Confirm registration and deposit

    Bidders at a Montana tax deed auction do not pre-register, but three requirements bind at the auction itself. An entity must give the treasurer written proof that it is a domestic entity before the treasurer will accept its opening bid, and a foreign entity may not buy at all. The high bidder posts a nonrefundable deposit at the time of sale of 5 percent of the bid or 200 dollars, whichever is greater, applied to the price on full payment, and the treasurer may ask bidders to show they can post it. Full payment of the purchase price plus the treasurer's auction costs is due within 24 hours of the sale, excluding weekends and legal holidays, and a bidder who misses it loses the parcel to the next highest bidder. Confirm the accepted payment methods with the county treasurer before the auction opens.

  3. Check the state rules that change the bid

    Read the Montana due-diligence checklist before bidding. Redemption, liens that survive a tax deed, title cleanup, and payment deadlines can change what a parcel is worth. Which liens survive is state law, so read what survives a tax deed in Montana before you price the title work.

  4. Set a walk-away number

    Work out what the parcel is actually worth with the rural land value estimator, then turn it into a ceiling with the tax deed max-bid calculator.

Over-the-counter (leftover) purchases

Every Montana tax lien is effectively over the counter, because assignment is the only way one is ever acquired. The county holds each lien from the day it attaches, and the treasurer must assign it to any person who mails the assessed owner the statutory notice and pays the delinquent taxes, penalties, interest and costs plus the county's assignment fee. After the late August allocation step, whatever is left sits with the treasurer and can be assigned on demand for the rest of the year, subject to the same notice rules: not earlier than August 15, mailed at least 2 weeks before payment and no more than 60 days before it. Older tax years are assignable the same way. Separately, land the county itself took by tax deed is sold at a public auction the county commissioners must order within 6 months of acquiring title, at a price the board fixes in advance, with the list of lands and the time and place published by the county clerk. That county land auction is not a tax lien or tax deed sale and the delinquent taxpayer may repurchase up to 24 hours before the first offering.

New to this path? Read how over-the-counter certificates work. Every state has its own name for what goes unsold, so check what Montana calls its leftover tax-sale inventory.

Use the arrow keys to switch between these sections.

County offices

Tax Collector (runs the certificate sale)

Sanders County Treasurer's Office

406-827-6924

1111 Main Street W, Thompson Falls, MT 59873 (mailing: P.O. Box 519, Thompson Falls, MT 59873)

Official website

County notes

  • Montana runs no tax lien auction. Sanders County itself holds the tax lien once it attaches, and an investor buys in by having the Treasurer assign that lien under Mont. Code Ann. 15-17-323. There is no bidding, no premium and no rate to bid down: you pay the delinquent taxes, penalties, interest and costs in full and receive an assignment certificate.
  • The Treasurer's office is at 1111 Main Street W in Thompson Falls, with mail to P.O. Box 519. Ask for the Deputy Treasurer, the position the county charges with issuing real property tax assignment certificates and managing tax lien assignments and redemptions, at 406-827-6923. The main Treasurer line is 406-827-6924 and Alisa Garcia is the elected Treasurer.
  • The county publishes no assignment fee and no assignment application form. Montana assignment fees are set county by county, so confirm the amount, the accepted payment methods and any required paperwork by phone before you mail your notice of pending assignment.
  • State law requires every county treasurer to adopt a written policy for allocating a lien when more than one person seeks the same assignment. Sanders County has not posted its policy, so ask the office how it ranks competing requests before the August 15 notice window opens.
  • Payoff figures move daily. The published delinquent list prices penalty and interest to a single date, and the Treasurer's office asks buyers to call or come in for the exact amount owed on prior-year delinquencies because penalty and interest accrue every day.
  • No tax deed auction notices appear among the county's public notices. Montana's one tax deed auction path applies only where the parcel holds a dwelling occupied by the legal titleholder, and it is scheduled parcel by parcel after an assignee applies, never on an annual calendar.

Montana rules

Max interest rate
10% per year, fixed by statute (nothing is bid)
Minimum return
No statutory floor; every certificate earns the same statutory rate
Redemption
The clock runs from attachment of the tax lien, which happens no later than the first working day in August, and it ends on the first working day in August of the third year after that. Redemption stays open for the whole period and the assignee cannot shorten it. On the residential auction track the right to redeem runs further still: the statutory notice tells the parties that a tax deed will be auctioned unless the lien is redeemed before the date of the auction, and 15-18-112(4) lets a particular tax year be redeemed until a deed has issued under 15-18-211 or 15-18-220. Interest and costs keep accruing until the day of redemption, and the county treasurer, not the assignee, calculates the payoff as of the date of payment. A redemption before the lien is assigned goes to the county; after assignment the treasurer pays the assignee.
Deed deposit
The high bidder posts a nonrefundable deposit with the county treasurer at the time of sale of 5 percent of the bid or 200 dollars, whichever is greater, and the deposit is applied to the sale price on full payment. Notice of the deposit requirement must be posted at the auction site, and the treasurer may require bidders to show they can post it. The treasurer may refuse to recognize a bid from someone who previously bid and then refused to honor the bid.
Surplus proceeds
Montana pays the owner's equity out rather than letting it be forfeited. The portion of the opening bid equal to half the most recent assessed value of the land and of the dwelling is treated as surplus funds, and so is anything a winning bid adds above the opening bid. Where the deed is bought by someone other than the assignee, the treasurer first repays the assignee the amount paid for the assignment, including delinquent taxes, penalties, interest and costs, plus everything paid on the tax deed application under 15-18-219(2). The treasurer then distributes the surplus to the legal titleholder of record within 30 days of receiving payment from the purchaser, whether or not the titleholder lives in Montana. On the ordinary non-auction track there is no sale, no bidding and no surplus: the assignee receives the deed itself.
Governing statute
Mont. Code Ann. Title 15, ch. 17

A tax deed does not convey marketable title. Most buyers file a quiet title action before they can resell or insure the property. See the due diligence guide.

See the full Montanarules and every county →

Frequently asked questions

Does Sanders County, Montana sell tax liens or tax deeds?

Sanders County follows Montana's tax lien state system.

When is the Sanders County tax certificate sale?

No auction and no annual sale date. The Treasurer mails pending tax lien notices in July, and the county's July 13, 2026 quarterly update recorded "Mailed 536 pending tax lien notices." The tax lien attaches to the county no later than the first working day in August. An investor's own notice of pending assignment may not be mailed before August 15 and must precede payment by two weeks, so the earliest an assignment can close is roughly August 29, after which the office issues assignments on request rather than on a posted calendar. The sale is held in person. Always confirm the exact date with the County Treasurer before the sale.

How often does Sanders County hold tax deed sales?

Sanders County holds its tax deed sale As applied for. There is no deed sale calendar, and most parcels never reach an auction at all. Nothing is scheduled in advance. Each sale is scheduled and advertised in advance, so check the county's tax deed calendar for the next posted date.

I own a property in this sale. Can I stop it?

Often yes, by paying the overdue taxes, interest, and costs before the deadline. Montana's redemption rule: 3 years from attachment of the tax lien, ending on the first working day in August; 2 years for a subdivided residential or commercial lot with delinquent improvement district assessments and no habitable dwelling or commercial structure. Call the County Treasurer as early as possible for your exact payoff and options; deadlines are strict. Free help: lawhelp.org lists legal aid programs, and consumerfinance.gov lists HUD-approved housing counselors.

Where can I find the Sanders County tax sale list?

Sanders County posts its tax sale list at co.sanders.mt.us. Lists go up ahead of each sale and keep changing until the sale date, so confirm every parcel against the county's legal advertisement before you bid.

Verified Sep 11, 2026 against official county and state sources.

Tax Sale Atlas publishes educational information about public tax sale processes. This is not legal, financial, or investment advice. Rules, dates, and fees change; confirm with the county office before you bid.

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Compare sale calendars, platforms, and rules across the state, or read the guides before you bid.

Montana tax salesDue diligence guide
Call Sanders County Treasurer's Office